This tutorial is ideal for those who want to learn about or improve their basic Linux networking and security skills. It's especially appropriate for those who will be setting up applications on Linux servers or desktops. For many, much of this material will be new, but more experienced Linux users may find this tutorial to be a great way of rounding out their important Linux system administration skills.

If you are new to Linux, we recommend that you first complete the previous tutorials in the LPI certification 101 and 102 exam prep series before continuing:

• 101 series, Part 1: Linux fundamentals
• 101 series, Part 2: Basic administration
• 101 series, Part 3: Intermediate administration
• 101 series, Part 4: Advanced administration
• 102 series, Part 1: Compiling sources and managing packages
• 102 series, Part 2: Compiling and configuring the kernel